CVE-2026-4810
CriticalGoogle Agent Development Kit (ADK) has a Code Injection and Missing Authentication vulnerability
Published Apr 13, 2026 · Updated Aug 7, 2026 · Also known as GHSA-rg7c-g689-fr3x, PYSEC-2026-344
Key Facts
Patch in the next maintenance window- CVE-2026-4810 is a critical-severity vulnerability (CVSS 9.3 v4) affecting google-adk (pypi), Agent Development Kit (ADK).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 2.2% probability of exploitation in the next 30 days.
- Fixed versions are available, including Agent Development Kit (ADK) 1.28.1, Agent Development Kit (ADK) 2.0.0a2, google-adk 1.28.1.
- Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
CVSS v4
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber
EPSS (30-day exploit likelihood)
2.2%
Higher than 82.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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Description
A Code Injection and Missing Authentication vulnerability in Google Agent Development Kit (ADK) versions 1.7.0 (and 2.0.0a1) through 1.28.1 (and 2.0.0a2) on Python (OSS), Cloud Run, and GKE allows an unauthenticated remote attacker to execute arbitrary code on the server hosting the ADK instance.
This vulnerability was patched in versions 1.28.1 and 2.0.0a2.
Customers need to redeploy the upgraded ADK to their production environments. In addition, if they are running ADK Web locally, they also need to upgrade their local instance.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| google-adkpypi | >= 1.7.0 | 1.28.1 |
| Agent Development Kit (ADK) | >= 1.7.0 | 1.28.1 |
Patched Releases
Agent Development Kit (ADK)
1.28.1, 2.0.0a2
google-adk
1.28.1, 2.0.0a2
Timeline
Publicly disclosed
Apr 13, 2026
Last updated
Aug 7, 2026
Weakness Type
- CWE-306 Missing Authentication for Critical Function
References
FAQ
Common Questions.
A Code Injection and Missing Authentication vulnerability in Google Agent Development Kit (ADK) versions 1.7.0 (and 2.0.0a1) through 1.28.1 (and 2.0.0a2) on Python (OSS), Cloud Run, and GKE allows an unauthenticated remote attacker to execute arbitrary code on the server hosting the ADK instance.
Affected: google-adk (pypi) versions >= 1.7.0; Agent Development Kit (ADK) versions >= 1.7.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Agent Development Kit (ADK) 1.28.1, Agent Development Kit (ADK) 2.0.0a2, google-adk 1.28.1.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
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